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Blababa [14]
3 years ago
15

Choose the best tool for each scenario.

Chemistry
1 answer:
Mama L [17]3 years ago
8 0

Answer:

a) Graph

b) Weight balance or gas syringe  or upside-down measuring cylinder

Explanation:

a) Identifying a trend in temperature change over time - The best tool for this scenario is to represents the temperature daily, weekly, monthly or annually on graph to interpret the fluctuation in temperature owing to local seasonal changes and weather conditions

b) Measuring the mass of a product of a chemical reaction - If the product is solid or liquid then the balance is used to measure the mass. If the product is a gas, then  gas syringe  or upside-down measuring cylinder is used.

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Which is the best term to use when describing the energy of motion?
Anettt [7]
Kinetic. Transform to chemical energy in muscles
7 0
3 years ago
A sample of oxygen gas at a pressure of 1.14 atm and a temperature of 21.5 degrees Celsius, occupies a volume of 815 ml. If the
maria [59]

Answer:

The volume of the gas will be 573.52 mL.

Explanation:

Boyle’s law states that <u>the  pressure of a fixed amount of gas at a constant temperature is inversely proportional  to the volume of the gas</u>.

The equation for Boyle's law is:

P₁V₁ = P₂V₂

We want to know V₂, that is, the volume of the container after the compression. We rearrange the equation and calculate:

V₂ = P₁V₁ ÷ P₂

V₂ = 1.14 atm × 815 mL ÷ 1.62 atm = 573.52 mL

7 0
4 years ago
A 25-mL solution of H2SO4 is completely neutralized by 18 mL of 1.0M NaOH. What is the concentration of the H2SO4?
Charra [1.4K]
There are several information's already given in the question. Based on the information's provided, the answer can be easily deduced.
V1 = 25 ml
     = 25/1000 liter
     = 0.025 liter
V2 = 18 ml
      = 18/1000 liter
      = 0.018 liter
M2 = 1.0 M
M1 = ?
Then
M1V1 = M2V2
M1 = M2V2/V1
      = (1 * 0.018)/0.025
      = 0.72 M
From the above deduction, it can be easily concluded that the correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has actually come to your help.
5 0
3 years ago
Read 2 more answers
1. How many liters of Co, gas are produced from 3.5 moles of 02​
Pavel [41]

The Equation of reaction

C + O2 === CO2

First Blank spot would be

---- 3.5moles of O2

2nd spot

Up.... 1mole of CO2

Down ---- 2moles of Oxygen atoms

3rd spot

Up... --- 22.4L of CO2(1mole of any gas at STP contains 22.4L)

Down---- 1mole of CO2

Final answer --- 3.5 x 1/2 x 22.4

=39.2L of CO2

7 0
3 years ago
Water is 11% hydrogen and 89% oxygen by mass. How many grams of oxygen are in a 250 g glass of water?
SCORPION-xisa [38]
222.5 g

I did it like this:

X/250= 89/100=
22250/100=
222.5
4 0
3 years ago
Read 2 more answers
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